Molding-machine.



J. N. BANENFELD.

MOLDINGv MACHINE.

APPLICATION FILED JULY27. 1914.

Patented Dec. 5, 1916.

2 SHEETS--SHEET I r VW. Ll

.L N. BTTEN'FELD.

NIOLDING MACHINE.

APPLICATION FILED JULY 27.1914.

Patented Dee. 5, 1916 2 SHEETS-SHEET 2.

anni; in. narrnnnnnn, on cnnvnnann, onto.

Specification of Letters latent.

)Patented Dec. 5, 19116,

Application filed July 27, 1914.-.; Serial No. 353 336.

To LN flo/tom t may concern: i

Be it known ,that l, Jon N ldn'r'rnnrnnn, a citizen of' the UnitedStates, residing at Cleveland, in the county ot Cuyahoga and State ofOhio, have invented a certain new and useful ll'nl'irovement inliloldingdiiiachinos, of which the Yfollowing' is a full, clear, andexact description.

This invention relates to a molding machine, and provides a machinewhich combines a jarring mechanism and means for comliressing the sandwithin the iasl-c. Further, it comprises means for drawing the patternfrom the mold.

Generally speaking, the invention com-- prises the elements andcombinations thereof set forth in the accompanying claims.

Reference Ishould be had to the accompanying drawings forming a part otthis specilication, in which Figure 1 is a perspective elevation of themachine; Fig. :"2 is a perspective elevation showing` the machine in a.certain operating position; Fig. 3 is an elevation with parts in sectionof themolding machine; and Fig. i is a top plan view on the line stl-:on Fig. 3. i

The whole machine is mounted upon a base 1, from which there areupwardly ei;- tending legs 2 and 3, which legs are joined to a rearstandard al, which has an upward extension f y The cylinder (3 ispreferably secured to the legs f2 and and to the back portion i. Thiscylinder (i is hollow, and .inthe bottom portion is provided with anopening il Secured to the cylinderI (3 is aY cylinder 8, the centralopening in which reg' ters with ytheopening 7. The lower end ot thecylinder 8 is closed by a'plate 9. This plate is'proyided with openingsthrough which entends rods 1G, which are screw'threaded a-t'their lowerends to receive nuts 11 The lower ends otthe rots 1() engage with thebase 1, while the nuts are screwed into engagement with the plate 9.These rods therefore afford in part a supporting means tor the plate 9,and steady the lower cylinder 8 and plate 9 against Vibration.V

Within the cylinder 6 there is a hollow raising piston 12, which isprovided with suitable packing to .make an air tight joint between thepiston 12 and the cylinder 6.

.Extending downwardly from the piston 12 is a piston 13, which passesthrough the opening .7 in the cylinder (j, and has a working sliding fitwithin the cylinder 8. Suitable packing is provided for the piston 13,as indicated at 13a.

The hollow piston 12 is provided with head 11i, which is adapted to restupon the upper portion or' the cylinder 6. rlhis head is provided with acentral opening, and the interior of the piston 12 is hollow. Throughthe opening in the head 14 there extends a casing 15 to the lowerportion of which is secured a hollow extension casing 15a. The casing 15is secured to a supporting table 1G, so that the supporting table 16 andthe casing 15, when moved, will move as a. unit` Withinthe casing 15,which is hollow,

there extends a piston 17. This piston is ofV less diameter than thediameter of the casing 15, and so provides a space between the piston 17and the casing 15. The piston 117 carries 'a head 18 having suitablepacking, which engages with the interior `wall of the casing 15. Thehead 18 has a downwardly projecting' portion 19, which extends withinthe lower casing 15a. The piston 17 at its upper end projects through asuitable stuffing box indicated at 20, which is secured to or :Forms avpart of the casing 15. The piston 17 is secured to a plate 2l.

Upon the supporting table there are secured four or more posts which arerepresented at These posts are mounted in slots, indicated at 23, whichpermit lfthe posts 22 to be adjusted inwardly or outwardlyupon the plate21.

riecin'ed to the table 1G are four or more upwardly extending posts 24;,and these posts at their upper ends support a molding table 25. Theposts 24% extend through suitable openings in the plate 21. The moldingtable 25 is provided with slots Q6, which permit movement of the posts22 in accordance with the adjustment of these posts in the slots 23.

The molding table 25 is adapted to receive a pattern plate indicated at27, and the tops of the post-s will lie substantially flush with theupper surface et' the pattern plate y.27, andV when a flask is mountedupon the 'ceive nuts'31. These nuts may be adjusted upon the rods 30,and will serve as a means for limiting the upward movement of' they'table ,16. Y Theplate 9 is provided with anopening 32,'which forms aninlet for a motive fluid u'nder compression. In the cylinder 8 there isfanexhaust port 33, which lies a suitable distance abovethe lower end ofthe piston 13, when this piston is in its lowermost ,positien'. Whenmotive fluid is admitted through the port- 32. it will raise the piston13`and" with it all the yparts of the machine which are supported uponthis member. l/Vhen the piston rises far enough to uncover the port 3.3,the air will exhaust, permitting the piston and the parts carriedthereby to descend by gravity. This cycle of operations is continuous,and results in' a jarring action 'which causes the sand within the flaskto pack around the pattern in a manner well understood in the art.

p `l\Iotivefluid may be supplied from a fluid pressure line to the port32, by means of a conduit 34, which will be governed by a suitable valve35, Icarried by a. bracket 36, which is suitably secured to the hollowcylinder 6.

There'is port 37 whichcommunicates with the lower portion of theinterior of the cylinder 6, andbcneath the hollow pistonv 12. This port37 is by means of a suitable conduit 38 l.connected with a fluidpressure line,

and. cont-rolled by a valve 39, which is a three-way valve` in oneposition, permitting compressed fluid to pass beneath the piston 12 andin another position permittingy the fluid Nto exhaust from beneath thepiston 12. lVhen theifluid'under pressure is supplied beneath the piston1Q, it will cause the piston 1Q and lthe parts carried thereby to beraised.

In conjunction with the pipe there is a valve generally indicated at 3Sattached to axlevcr 3S", and upon the lever there'is a weight 38C. `Thisweight is sopositioncd upon'ithe lever 3S thaty the valve 38""will operifat a predetermined pressure. lVhen therefore air is admitted throughthe valve neath the head 1S ol the piston 17. rThis duct 4l() by meansof a flexible conduit 41 .communicates with a fluid pressure line, andis controlled by a valve 42.

` rlfhrough the upper wall o'f the casing 15 there is a duct l13, whichcommunicates with the space between the piston 17 and the inner wall ofthe piston 1V. This duct by means of a conduit 4i communicates with thefluid pressure line, and under normal conditions of operation this ductis always in e'on'imunieation with the pressure line. Thisuprovides ameans for normally holding the piston 17 against relative movementduring the jarring operation, for, as will be readily appreciated. therewould otherwise bel considerable likelihood of the piston 17 moving asthe piston 12 is moved during,r the jarring operation.

rThe presence of the air pressingr down upon the head 18 of the cylinder17 also has theafunction of' steadyinnr the raising of the mold when air is admitted beneath the piston head 1S. It, foi any reason, thepiston head 13 does not move uniformly, due to any sticking or hangingaction, the pressure will build up beneath the piston head 1S, and,whensuiiiciently great, will raise the piston head 18 with a` jerk. Thatis to say, this would be the likely thing,r but for the preff sureacting; downwardly upon the head 18. The air above the piston head 1Swill act as a cushion, so that there will beno violent movements of thepiston 17 and its head 1S. lt is, however. entirely possible to move thepiston 17 by admitting motive fluid beneath the. head 18, because of thegreater area` for pressure beneath the head 1S than the pressure exertedb v the air above the head.

Upon the urnifrht portion 5, there are extending' ears 45, which arespaced apart, and receive an arm 4G. The portion of the arm between theears and the ears themselves are provided with openings which aline andreceive a pin 47. The arm 4G at its central portion has an opening`which is screwthreaded` and cooperatingr with this opening is a post 1Swhich is also screw-threaded. llngaling with the post and lying' abovethe arm 4-(3 is a threaded nut 4S), which will lock the post 1S in itsadjusted position with respect to the arm 4G. Upon the lower part of9./ln a molding` machine, the combination ,with a support and asupporting table, a

.ipiston member and a cylinder member, one

ot said members supported from vthe support, theother carried by thesupporting table, ,a molding table supported by and above the supportingtable, an intermediate plate member, guiding means for said interminateplate member carried by the sujjqgorting able, pins carried by theintermediate plate member and adapted to extend through openings in kthemolding table, and cooperating means carried by the supporting tabl)land intermediate plate member for moving the intermediate plate member.

10. ln a, molding machine, the combinar tion with a base, a moldingtable,`al cylinder member, a piston member, one otsiiid members beingsupported by the base, the."

other of said members supporting the mold# ing table, a presser plateabove the molding table, a. conduit for conducting compressed Huidbetween said cylinder and piston, a valvey in said conduit, and meansfor setting said valve to open at a predetermined pressure.

11. In a molding machine, the combination with a base, a molding'table,a cylinder member, a piston member, one of said members being supportedby the base, the other of said members supportingthe molding table, 'apresser plate above the molding table, a. conduit for conductingcompressed fluid between said cylinder and piston, a

valve in vsaid conduit, and means normally holding said valve closed,said means' being adjustable so that the valve may be opened atpredetermined pressures.

12. ln a molding machine, the combina.- tion with a base, a moldingtable, a cylinder member, a piston member, one of said members beingsupported by the base, the other of said members supporting the moldingtable, a presser plate above the molding table, a conduit for conductingcompressed fluid between said cylinder and piston, a valve in saidconduit, a lever engaging said valve, and a weight adjust bly mountedupon said lever.

13. In a molding machine, in combina tion with a jarring cylinder andpiston, a squeezing cylinder and piston, a presser plate adapted toengage the sand in a flask, a molding table, a supporting member belowthe molding table, means carried by the supporting member and adapted toextend beyond the molding table to engage a Hash and raise the same, andmeans ,for operating said supporting` member.

14. In ay molding` machine, in combination, a jarring` cylinder andpiston, a squeezing cylinder and piston, a presser plate adapted toengage the sand in a flash, a molding table, a supporting member beneaththe molding table, members extending trom said supporting member andadapted to engage a flask upon the molding table, a fluid opersaid plateadapted to engage a flask upon the molding table, a piston member and acooperative cylinder member, one ot which members is carried by saidsupporting table, the other ot which is supported Strom the squeezingpiston, and means tor admitting a vtluid under pressure between the lastmen tioned cylinder and piston,

1o'. In a molding machine, in combination, an alined jarring cylinderand squeezing cj, linder, an alined and connected jarring piston andsqueezing piston, a molding table, a supporting table. beneath themolding table supported by the squeezing and jarring pistons, meanscarried by the supporting table adapte 1l to engage a flask upon themolding table. ay cylinder member and a 'piston member, one ot' whichmembers iS carried by the said supportingtable, and the otherissupported from the squeezing piston. and means tor admitting airbetween the last mentioned cylinder and piston. v

17. ln a. molding machine, in combination, an alined jarring cylinderand squeezing cyl inder, an alined and connected jarring piston andsqueezing piston within the aforesaid respective eylinders, means Aforadmitting motive 'fluid between the aforesaid cooperatingcylinders andpistons` a supporting table above the squeezing piston, a molding tablesupported by and above said supporting table, a, plate intermediate themolding table and the supporting table, means carried by said plateadapted lo engage a flask carried upon the molding` table, a pistoncarried bv said plate, a cylinder carried by said supporting table,means for admitting motive fluid between the last mentioned piston andcylinder, and a pressure plate supported above the molding table andadapted to engage the sand within a flask the molding Lubin, menne foroperating said silient pressure above and upon the last menmemberscomprising a piston member and a tioned piston hea-d.

eopemting cylinder member, one of which In testimony whereof, I hereuntoaffix my members is married by said plete7 the other signature in thepresence of two Witnesses. of which is supported from the squeezing JOHNN. BATTENFELD.

piston, means for admitting motive Huid be- Witnesses: tween the lastmentioned cylinder and pls- A. J. HDsoN, j ton, and .means foi eifectmga downward re- L. PORTER.

